from machine import Pin   
from time import sleep_us , sleep_ms 
import time 

BUZZER = Pin(0,Pin.OUT)
LED= Pin(1,Pin.OUT)
TRIGGER = Pin(2,Pin.OUT)
ECHO= Pin(3,Pin.IN)

def mesure_distance():
    TRIGGER.value(1)
    sleep_us(10)
    TRIGGER.value(0)
    
    while ECHO.value() == 0 :
        toff = time.ticks_us()
    while ECHO.value() == 1 : 
        ton = time.ticks_us()
    t = (ton - toff) / 2 
    distance = round((t * 0.0343 ) , 2)
    return distance

def controle_song_et_lumiere(distance):
    interval = max(1 - distance / 100, 0)
    BUZZER.on()
    time.sleep(interval / 2)
    BUZZER.off()
    time.sleep(interval / 2)
    LED.on()
    time.sleep(interval / 2)
    LED.off()
    time.sleep(interval / 2)

while 1:
    distance = mesure_distance()
    controle_song_et_lumiere(distance)